Nut-lock



A. G. COX.

NUT 1.00K.

Patented Nov. l, 1892.

(No Model.)

.m m w Il l...

stitute the lock for the nut.

UNTED STATES PATENT OFFICE.

AUGUSTUS G. COX, OF GRATTON, VIRGINIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 485,174, dated November1, 1892.

Application led January 28, 1892. Serial No. 419,588. (No model.)

To a/ZZ whom it may concern.-

Beit known that I, AUGUSTUS G. COX, a citizen of the United States,residing at Gratton, in the county of Tazewell and State of Virginia,have invented a new and useful Nut- Lock, of which the following is aspecification.

This invention relates to nut-locks; and it has for its object toprovide a simple and improved article of this character which isapplicable to the ordinary construction of bolts and nuts and withoutchange or alteration thereof.

A further object of my invention is to provide an inexpensive anddurable nut-lock of this class which will possess advantages inv pointof ease and rapidity of application,ef fectiveness in use, and generalefficiency.

In the drawings, Figure l is a perspective view illustrating theapplication of my invention to railroad-rails.` Fig. 2 is a verticalsectionalviewofthesame,taken centrallythrough one of the bolts. Fig. 3is a similar view illustrating a modification in the fish-plate or othersurface with which the washer contacts. Fig. 4 is a detail perspectiveview of the washer.

Corresponding parts in the figures are denoted by the same letters ofreference.

In the drawings I have shown my improved nut-lock as applied torailroad-rails for purpose of illustrating its application and fuuction;but it will of course be understood that the invention may beused uponmachinery and in all other places where a nut-lock is desirable.

Referring to the drawings, A A designate the meeting ends of tworailroad-rails, and B B the {ish-plates, the rails and fish-plates eachbeing provided with the usual coincident boltapertures a b,respectively. The outer surface of one of the fish-plates is corrugatedor serrated adjacent to the bolt-apertures, as shown at C, and for thepurpose hereinafter explained. Bolts D are passed through the fish-plateat the opposite side through the rail and the second fish-plate, thethreaded ends of the bolts being surrounded by the corrugations orSerrat-ions C.

E designates the washers, which also con- These washers are preferablycircular in form, provided with a central bolt-eye e, and are corrugatedtransversely from side to side, as shown. One side of the washers is,however, not corrugated, forming a smooth edge E', parallel to thecorrugations. In manufacture the washers may be struck from smooth sheetmetal and then corrugated from corrugated sheet metal, or they may becast with the corrugation formed therein.

In practice the washers are placed upon the threaded ends of the boltwith their corrugations coinciding with the corrugations or serrationsin the opposing fish-plate. Nuts F are then applied upon the ends of thebolts and screwed home, thus locking the Washers in engagement with theopposing fish-plate. The nut is then locked against movement in eitherdirection by bending up the uncorrugated portion E of the washer againstthe adjacent side or sides of the nut, as clearly shown in Fig. 1.

In some instances the corrugations or serrations in the fish-plate maybe dispensed with, (see Fig. 3,) as in the case of the use of woodenfish-plates, or in all instances where the washer contacts with a woodsurface. In such cases when the nuts are screwed home the corrugatedwashers are forced suciently into the wood to prevent turning thereof.

I claim as my invention- 1. As an improved article of manufacture, anut-lock consisting of a washer transversely corrugated and adapted whenapplied to have one of its edges bent up against the nut to be locked,substantially as set forth.

2. As an improved article of manufacture, a nut-lock consisting of awasher corrugated transversely and formed with a smooth uncorrugatededge parallel with the corrugations, said washer being adapted whenapplied to have said smooth edge bent up against the side or sides ofthe nut to be locked, substantially as and for the purpose set forth.

, In testimony whereof Iaffix my signature in presence of two witnesses.

AUGUSTUS G. COX.

Witnesses:

J. R. CRooKEN, JAMES A. TILLER.

